Hi Evaldo,
If you want to connect Outlook desktop client to your Office 365 account automatically, you can refer to the following article: http://help.outlook.com/en-us/140/ms.exch.ecp.useoutlookanywhere.aspx
If you want to configure your Office 365 account in Outlook desktop client manually, you can refer to “Manually set up Outlook” part in the following article: http://support.microsoft.com/kb/2404385
Thanks,
Vivian Wang